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`(No Model.) 3 Sheets-SheetJ 1.

G. G. TRACY. MACHINE POR'GRADING SHOT.

Patented Jan.. 6, 1885.

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(No Model.) 3 Sheets-Sheet 2.

C. C. TRACY. MACHINE 'POR GRADING SHOT.

No. 310,335. PatentedJan. 6, 1885.

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1G. C. TRACY. MACHINE FOR GRADING SHUT. No. 310,335. f Patented Jan. 6, 1335.

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CHRISTOPHER C. TRACY, OF NEYV YORK, N. Y.

MACHINE FOR GRADING SHOT.

SPECIFICATION forming part. of Letters Patent No. 310,335, dated January 6, 1885. Application filed July 29, 18S-fl. (No model.)

To LZZ whom it may concern:

Be'it known that l, CHRrsToPr-IER C. TRACY, of the city, county, and State of New York, have invented a new and Improved Machine for Grading Shot, of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the gures.

Figure l is a front elevation of a shot-grading apparatus made inY accordance with my invention. Fig. 2 is an enlarged sectional elevation of the lower part of the same, showing the construction of the drums. Fig. 3 is a transverse sectional elevation taken on the line :v x of Fig. 2, and Fig. 4 is an end elevation of the lower part of the apparatus.

The invention will first be described in connection with the drawings, and then pointed out in the claims.

The frame A ofthe machine may be of any suitable construction, formed to support the pivoted bearing or journal-boxes B and vertically-adjustable bearings C for the shafts D,

on which the drums E are secured. The j ournal boxes or bearings C are made vertically adjustable for giving the proper pitch to the drums E, and this adjustment is accomplished in this instance by means of the screws F, held in the fixed and screw-tapped projections F' and the crutches G, the legs u. of which are held between the way-plates b b, Fig. 4, and are bent outward at their lower ends, as shown at c, to rest upon the upper ends of the screws F. The journal-boxes C are pivoted in the heads (Z ofthe crutches G upon the trunnions c', to accommodate er conform to any inclination ofthe shafts D, and the journal-boxes D are pivotedin the supports I5' upon trunnions b', for a like purpose. The drums E are made of sheet metal in plain cylindrical form, and perforated throughout with holes the size of the grade of shot to be separated out by each drum, and the drums are secured to the headplates Il H', iixed upon the shafts D, and are each internally supported between the said head-plates H H' by a ring, l, on shaft D, to prevent the drum from sagging. The shot to be graded is admitted to the drums E in succession from one to the other through the feedpipes J, the lower ends of which enter the tubes K, secured in an opening made in the annular disk L of each of the drums. These disks L are each placed loosely upon the shaft D and fitted against the metal rings M, iitted in the central openings, 7L, of the heads H', and the ring M in each drum is by preference made integral with the collar i, .which` -the plates 7.: 7a, secured to the outer surfaces of the Idisks L, as shown clearly in Fig. 2, the spider being held by the fixed collar o, placed on the shaft D. The head-plate H in each of the drums has several openings, Z Z, made through it near its periphery, for the exit of the shot which do not pass through the perforations of the drums Il, the outer portions or walls, Z' Z', of the head II serving to maintain a shallow layer of shot at all times upon the interior of the drum E, so that the shot, ou entering the drum and falling from the distributers I? Q, will not drop in direct contact with the drum E, and thus become battered, nor slide immediately out of the drum. The distributers I Q are placed in each drum E, andare made ot' perforated sheet metal, and in this instance are secured within the drums E around the shafts D by the above-described rings M and the rings It, which are similar to the rings Mv-that is, i'ormed integral with the collars m, which lit upon the shafts D, and with the arms m', which brace the rings M from the collars m, as shown clearly in Fig. 2. The perforations of the distributers P are made smaller than those of the distributers Q, iorreflecting a better distribution of the shot in the drums.

For 'forcing back into the drums E any shot that may become wedged into the perforations of the drums, I employ the rollers S, preferably of rubber, leather, or cork, or other material, which 'run in contact with the outer surfaces of the drums E, preferably at the tops of the drums, as shown. iournaled at one end in the swinging arms T, held drawn downward at one end by the springs t, and at the other ends the said rollers are held in slots made in the upper endsofthe upwardly-projecting arms U, bolted to the upper sides of the pivoted journal-boxes C, and the springs t are fitted in the slots above the ends of the said rollers, for forcing them down with considerable pressure in contact with the outer surfaces of the drums E. By the use of these rollers all danger of battering the shot in forcing them out of the perforations in the drums E is avoided, and they are effective in dislodging all of the shot which may become wedged in the perforations. The shafts D are revolved for revolving the drums E and the other parts secured to the shafts by the main drive-shaft V and the shafts W XV, which are provided with the beveled gearwheels w and worms p, the former meshing with the gear-wheels o on shaft V, and the latter with the worm-wheels q, secured upon the shafts D, as shown clearly in 2.

Below each drum E is placed a hopper, E', which is provided with a pipe, Ff, for conducting to a suitable receptacle the grade of shot separated out by each drum. At the end of each hopper E is formed the smaller hopper E", which surrounds the lower end of the drum E, to receive the mixed mass of shot which passes out of the ends of the drums.

From the hoppers E pass the above-de.

scribed feed-pipes J, each leading` to the next drum E below, for conducting the mixed mass of shot from the lioppers E on through the apparatus, so that the shot will be separated into as many grades as there are drums in the apparatus, the perforations in the drums being of different sizes, as in ordinary shot-grading machines.

B makin@ cach drum E a nlaiir c linder the perforations therein all remain the same size in all parts of the drum, so that the shot sift through it alike throughout the whole drum, and thus effect a perfect grading of the shot, which is not the case where conical drums are used, as the tapering of the drums diminishes the perforations in size at the smaller i ends of such drums, and thus causes an imf perfect grading of the shot; and by means of the screws F the drums may be set at any pitch The rollers S are l desiredforincreasing or diminishing the speed with which the shot pass through the drums. The head-plates H are by preference made conical, as shown at h', so that any shot that may be carried up in the discharge-openings Z, or by the drum in falling back, -will be thrown toward the center of the drum, and thus prevented from passing out the dischargeopenings except in the regular way; and the plate L, being held by the 'springs N and spiders O, always forms a perfect joint with the ring M, no matter what angle the drums E may be placed at, thereby avoiding all possibility of leakage, so that in all cases a perfect grading of the shot will be effected by this machine.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentl. The frame A, provided with the plates b and adjusting-screw F, combined with the crutch G, held-by the plates b and supported upon the screw F, the drum E, the journalbox C, pivoted in the crutch, the pivotedjournal-box B, and the drumshaft D, journaled at one end in the box C and at the other in the pivoted box B, substantially as set fort-h.

2. The combination, with the adjustable drum E, of the roller S, the vertically-adjustable arm U, and the swinging arm T, substantially as set forth.

3. The combination, with the drum E, shaft D, pivoted arm T, and pivoted journal-box B, of the pivoted vertically-adjustable journalbox C, slotted arm U, secured to the top of said box, and roller S, journaled in said slotted arm and arm T, substantially as set forth.

4t. The drum E, provided with an annular head, H, having a metal ring, M, and the shaft, in combination with the plate L, placed upon the shaft, and the coiled spring N, substantially as set forth.

5. The drum E, having head H', plate M, plate L, the shaft, and the spring, in combination with the spider O, having arms j, the plates 7c 7;, having orifices, said plates being attached to the plate L, and the collar o, substantially as set forth.

CHRISTOPHER C. TRACY.

Vitncsses:

XVILLIAM XV. TRACY, GEORGE W. Mesi-nun. 

